1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a613fc314e4c62f4a281473ec87a033c85089e89ad36c1fb555888970d18faf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a99184d-b363-4447-8ec4-c2a724485d35.json and https://artists.proofprofile.net/proofs/artist/0a99184d-b363-4447-8ec4-c2a724485d35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbb29bbd68a8611bc49ed8f1abbbab3cacec4732ad2d7cf9561d67b6f3bbe8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f64c3e49fd1326de9992d1d731307de7579d21c2ef197095aa847ee51b39333. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfaf6c7a4315426323031a9bf9abcf379e2efbe2c3e8a189f2c2060fc6d94b9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532fe8a70c9fe451dd8bf1d0db9f51fc8a689cf822eb5b9d93060f6bb2d2ce2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1307215da89d7c4237a6a2d4eac97c63ffda03149f980cf9013b5eb79ef5fc1d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332d038160147a73e6184153f32e073568eaf391f7a08369d7556c80836d1dae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755de5851586bc2af23508d1952e0516f208c9a213239ef90fcd5c99f81a3833. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242424184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d5c920c21628247cbc96e4081590433349dd9398e20bb897e7f5fcc390f1bb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012441170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e1ad6be9052b03377e41761c65bf228e2fc17ab4a9aa2720ef133473f4be0a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012437404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b432722d442186c8df7a7e9612baae033e58d83396637d95e8a8dd8e4c6a56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2465689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0adcb5acdbd4ab35198ef728f6d54b3e7eca1e99c4f9bf68015550b07dd659. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2463178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ac4cb406cde59ae928dca8cbbc13c571cd0f59bd61638fe135bf28426b8bd3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYFZ2459704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bac96e45af3f1e7e3f36834d5b8ab9b01789edc73a719e47efad47d1357d0a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ING212483997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd546dd8861c22224f9327baf8eb1e2e6782a6b6240be3bc3008773ed32350d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ING212470624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300ae49571ce98a9a00665e69da474b626c1b5b4413b1cd49d4fab4a01de3bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde161f0e477802e6887211f6d2330c3406c95dfc16986a74621b791e660382. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602300465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8c0419d1a59dad88afe0f225dd1d8e264e460c020bad46a3c43578010ccc99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602300464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a5a41f1cfdbfdca6a2e585903bb3f3a208a899d05b6be76894f53c3c9b6f9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a3165dd4018c3d4022bd9892964ff68214749f729303c92f8ad26119893f21. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602300460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a998b2217a5113dba46c9ff5489935ceab0b0308701d8b23090864c8255d942. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0893345633660e997c9c8e459b2b4a6e95a0a5c5abd15de50b575e4a6475b136. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eb84364ed65f28b4dd00c4f9c7c6fbfe9f25dc6cfea9b9d20b666ca8c21ce9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3014982240f9f9a40abddacfb54b96f292b48a411c23faeb20fb526635146fc8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c30d2e12fcb42b95290a14d7ba4c25b0c84da1d9ce772d4c85591917819911. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3cd424f4b8e7fc4087d1f47e16cc54d317e8b67aff2f6ba459331f32b3d738. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC602200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf0d1bac441d0fb17ba6e3957a34e6c884cdd4e9b03f5ae35041471ccf1b55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHF032201115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699e4618b204deed9386181d58515cf9c37e5af2112e00c9c2ce0c93f84ea87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INN242426930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f1f6adf327314fcd40a08017b9f7683bd13aad0ddc6e0465cb37cc37002ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND792410239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54b1afee8faa9c7da06bd9379d2ce83be3f2ac1f0b3abfd65750ea8fc84488a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ING212408254.